37 lines
1.6 KiB
Diff
37 lines
1.6 KiB
Diff
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From 441bc6b75c8edcfa825b324e05f7cd838feac2bb Mon Sep 17 00:00:00 2001
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From: "Lee, Chun-Yi" <jlee@suse.com>
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Date: Thu, 11 Apr 2024 19:36:30 +0800
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Subject: [PATCH] EmbeddedPkg/Library: Support SOURCE_DATE_EPOCH in
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VirtualRealTimeClockLib for reproducible
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RISC-V ovmf used VirtualRealTimeClockLib but the default epoch is a
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compilation time. It causes that the RISC-V ovmf binary image is NOT
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reproducible.
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This patch added the support of SOURCE_DATE_EPOCH by printenv command.
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If SOURCE_DATE_EPOCH be found then we use it as BUILD_EPOCH. Otherwise
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we run date command for setting BUILD_EPOCH.
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For distributions want a reproducible RISC-V ovmf image, they should
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export SOURCE_DATE_EPOCH environment variable before building ovmf.
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References: https://reproducible-builds.org/docs/source-date-epoch/
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Signed-off-by: Lee, Chun-Yi <jlee@suse.com>
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---
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.../Library/VirtualRealTimeClockLib/VirtualRealTimeClockLib.inf | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/EmbeddedPkg/Library/VirtualRealTimeClockLib/VirtualRealTimeClockLib.inf b/EmbeddedPkg/Library/VirtualRealTimeClockLib/VirtualRealTimeClockLib.inf
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index 5d0f867eb6..0bd6bcee75 100644
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--- a/EmbeddedPkg/Library/VirtualRealTimeClockLib/VirtualRealTimeClockLib.inf
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+++ b/EmbeddedPkg/Library/VirtualRealTimeClockLib/VirtualRealTimeClockLib.inf
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@@ -34,4 +34,4 @@
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# Current usage of this library expects GCC in a UNIX-like shell environment with the date command
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[BuildOptions]
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- GCC:*_*_*_CC_FLAGS = -DBUILD_EPOCH=`date +%s`
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+ GCC:*_*_*_CC_FLAGS = -DBUILD_EPOCH=`printenv SOURCE_DATE_EPOCH || date +%s`
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--
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2.44.0
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